Rated 5 out of 5 stars

Από τον/την Virgule στις Δεκ. 5, 2018 · μόνιμος σύνδεσμος

Good news, this add-on can be made to work in TB 60.x with a simple tweak. See here:
http://forums.mozillazine.org/viewtopic.php?p=14817422#p14817422

Many thanks to Paolo for his add-on!